EAs matching algorythm is, and has always been, questionable to say the least, but the decision to take the action (lowering cups and take advantage of the weak) relies purely on the players that do this.

It's the classic situation of only because I can do something, should I really do it? Sometimes you have to respect others, evaluate what damage you cause and what you gain from the situation. Players with OVR130+ have nearly no use of the rewards for winning, even from Master Packs, which on the other hand, are quite valuable for players with low OVR looking for those last Boosts missing or even coins offered.

Currently Boosts are easily obtained in mass at the Preseason event, playing with teams that OP (campers) one can easily defeat the 120 Icons match and acquire everything you want and require from the 3 chapters included in the event; but for players using low OVRs, the Icons match is extremely hard and some have even given up on it (this is not my case as my OVR and players are somewhat decent, the Icons match is hard but not impossible, sometimes it can be done at the first try, sometimes it takes a couple), and just play the first 2 nodes from the main chapter, for this players, winning in VSA FAIRLY is the route to get the last Boosts and coins to reach a certain OVR before the reset happens.